H∞ excitation control of multi-machine multi-load power systems via Hamiltonian function method

Abstract

This paper investigates the H∞ excitation control of multi-machine multi-load power systems via the Hamiltonian function method. First, we reformulate the power system as a dissipative Hamiltonian system by using a proper feedback control. The proposed Hamiltonian realization can utilize the internal energy balance in the power system and facilitate the stability analysis. Then, based on the obtained Hamiltonian realization, we discuss the H∞ excitation control of the multi-machine multi-load power system and put forward a decentralized H∞ excitation control strategy. The stability of the closed loop system is analyzed. Simulation results demonstrate the effectiveness of the control scheme.